package com.config;

import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.ResourceServlet;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.servlet.Filter;
import javax.sql.DataSource;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;


@Configuration
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid() {
        return new DruidDataSource();
    }

    //配置Druid监控
    //1配置一个管理后台的servlet
    @Bean
    public ServletRegistrationBean statViewServlet() {
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        Map<String, String> initParams = new HashMap<>();
        initParams.put(ResourceServlet.PARAM_NAME_USERNAME, "admin");
        initParams.put(ResourceServlet.PARAM_NAME_PASSWORD, "123456");
        //allow谁可以访问: 如果不写默认就是允许所有
        initParams.put(ResourceServlet.PARAM_NAME_ALLOW, "localhost");
//        initParams.put(ResourceServlet.PARAM_NAME_DENY, "111");//禁止谁访问
        bean.setInitParameters(initParams);
        return bean;
    }

    //2.配置一个web监控的filter
    @Bean
    public FilterRegistrationBean webStatFilter() {
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());

        Map<String, String> initParams = new HashMap<>();
        //过滤拦截
        initParams.put(WebStatFilter.PARAM_NAME_EXCLUSIONS, " *.js,*.css,/druid/");
        bean.setInitParameters(initParams);
        bean.setUrlPatterns(Collections.singletonList("/*"));
        return bean;
    }
}
